Troubleshooting codes is a skillset that is always “taught” in school. There are always test that ask what to spot mistakes in the code syntax. This is often tested school exam, coding certification or interview coding tests. How often are these effective to spot if someone is good at troubleshooting code?

Troubleshooting cannot be Tested
Like all soft skill, it is difficult to test the level of troubleshooting. Tests usually focus on code syntax. This form of test are considered obsolete as compiler will flag syntax errors. Testing on logic flow also do not reveal much on your troubleshooting skills as you can memorise the form of common logic occurrences. This is why you cannot expect a person with lots of certifications as an indicator of good problem solver.
How to Demonstrate your Troubleshooting Skill
This brings the question on how one can identify this skill. There are a few common ways to demonstrate this skill. You can illustrate on how you are able to solve complex problems. Interviewers can also pose scenario based questions and see how the person react. A good problem solver will be calm to analyse and dissect the issues given. Another method is your track record of your career. If you are a problem solver, it is good to show it in your resume.
Scenario based questions are getting popular. Freshies must learn to demonstrate their soft skills. One of a key important skill is troubleshooting codes. Of course, certifications and tests will not reveal such skill. You can only demonstrate it via your track records or confidence to react to such scenario questions.